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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2012
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| Accesso online: | https://doi.org/10.1594/PANGAEA.825638 |
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| _version_ | 1867168565177614336 |
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| author | Rampen, Sebastiaan W Willmott, Verónica Kim, Jung-Hyun Uliana, Eleonora Mollenhauer, Gesine Schefuß, Enno Sinninghe Damsté, Jaap S Schouten, Stefan |
| author_facet | Rampen, Sebastiaan W Willmott, Verónica Kim, Jung-Hyun Uliana, Eleonora Mollenhauer, Gesine Schefuß, Enno Sinninghe Damsté, Jaap S Schouten, Stefan |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Although commonly reported in marine and freshwater environments, little is known about the biological sources of long chain alkyl 1,13- and 1,15-diols, and factors controlling their distributions. Here we analyzed the occurrence and distribution of these lipids in a comprehensive set of marine surface sediments and compare their distributions with environmental conditions like sea surface temperature (SST), salinity and nutrient concentrations. Fractional abundances of the C28 1,13-, C30 1,13- and C30 1,15-diols show a strong correlation with SST and based on these results, we propose the Long chain Diol Index (LDI), which expresses the C30 1,15-diol abundance relative to those of C28 1,13-, C30 1,13- and C30 1,15-diols. The LDI shows a strong linear correlation with SST (LDI = 0.033 × SST + 0.095; R2 = 0.969, n = 162) over a temperature range of -3 to 27 °C. Long chain diol distributions in sediments from the South Atlantic close to the Congo River outflow (West Africa) provided a 43 kyr LDI SST record. This record reflects several known climatic events and shows similarities with an alkenone-derived SST record obtained using the same suite of sediments, both in trend and in terms of absolute SST. This confirms the potential of the LDI as a proxy for palaeo-SST reconstruction. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_825638 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Long chain 1,13- and 1,15-diols in surface sediments ans SST reconstruction for sediment core GeoB6518-1 Rampen, Sebastiaan W Willmott, Verónica Kim, Jung-Hyun Uliana, Eleonora Mollenhauer, Gesine Schefuß, Enno Sinninghe Damsté, Jaap S Schouten, Stefan Although commonly reported in marine and freshwater environments, little is known about the biological sources of long chain alkyl 1,13- and 1,15-diols, and factors controlling their distributions. Here we analyzed the occurrence and distribution of these lipids in a comprehensive set of marine surface sediments and compare their distributions with environmental conditions like sea surface temperature (SST), salinity and nutrient concentrations. Fractional abundances of the C28 1,13-, C30 1,13- and C30 1,15-diols show a strong correlation with SST and based on these results, we propose the Long chain Diol Index (LDI), which expresses the C30 1,15-diol abundance relative to those of C28 1,13-, C30 1,13- and C30 1,15-diols. The LDI shows a strong linear correlation with SST (LDI = 0.033 × SST + 0.095; R2 = 0.969, n = 162) over a temperature range of -3 to 27 °C. Long chain diol distributions in sediments from the South Atlantic close to the Congo River outflow (West Africa) provided a 43 kyr LDI SST record. This record reflects several known climatic events and shows similarities with an alkenone-derived SST record obtained using the same suite of sediments, both in trend and in terms of absolute SST. This confirms the potential of the LDI as a proxy for palaeo-SST reconstruction. |
| title | Long chain 1,13- and 1,15-diols in surface sediments ans SST reconstruction for sediment core GeoB6518-1 |
| topic | |
| url | https://doi.org/10.1594/PANGAEA.825638 |